//
//  Police.h
//  NotificationTest
//
//  Created by wp w on 12-6-22.
//  Copyright (c) 2012年 __MyCompanyName__. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface Police : NSObject
//NSObject的观察者通知事件
-(void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context;
@end
